"Al-Awlaki's sermons were attended by three of the 9/11 hijackers. They were also attended by the accused Fort Hood shooter, Nidal Malik Hasan. In addition, U.S. intelligence intercepted at least 18 emails between Hasan and al-Awlaki from December 2008 to June 2009, including one in which Hasan wrote: "I can't wait to join you [in the afterlife]." After the Fort hood shooting, al-Awlaki praised Hasan's actions."